<template>
<div class="wrapper">
 <swiper :options="swiperOption" v-if="showSwiper">
    <swiper-slide v-for="item in list" :key="item.id">
      <img 
      class="swiper-img"
      :src="item.imgUrl" alt="">
    </swiper-slide>
    <div class="swiper-pagination"  slot="pagination"></div>
  </swiper>
</div>
</template>

<script>
export default {
  name: "HomeSwiper",
  props: {
    list: Array
  },
  data() {
    return {
      swiperOption: {
        pagination: ".swiper-pagination",
        loop: true,
        autoplay: 2000
      }
    };
  },
  computed: {
    showSwiper(){
      return this.list.length
    }
  }
};
</script>

<style lang="stylus" scoped>
/* >>> 是样式穿透, 会无视scoped属性 */
.wrapper >>> .swiper-pagination-bullet-active {
  background-color: #fff;
}

.wrapper {
  width: 100%;
  overflow: hidden;
  height: 0;
  padding-bottom: 31%;
  background: #eee;

  .swiper-img {
    width: 100%;
  }
}
</style>